master
Remove redundant re-assignment in for-loops under pkg
credentialprovider: track service account cred source in ext provider keyring
Sync pkg/credentialprovider/OWNERS with k8s.io/client-go/tools/auth/OWNERS
Replace the deprecated ioutil method in the pkg/credentialprovider directory
remove import doc comments
clean up: remove loop variable capture
credentialprovider: track kube secrets as creds sources in DockerKeyrings
Update credential provider plugin to support using service account token
Add RegistryConfig/RegistryConfigEntry.